Allen & Heath GR4

A Mixing Solution Designed for Multi-Zone Distribution

This type of mixer meets a very practical need: centralising multiple audio sources and distributing them cleanly across different areas. With its configuration combining mono and stereo inputs, it belongs to the family of installation mixing desks and mixers designed to go beyond basic hi-fi or DJ use. The aim here is to provide smooth control over sound distribution, with an approach focused on integration, ease of operation and service continuity.

Its 2+2-zone structure makes it a relevant solution for environments requiring separate audio distribution according to locations, times of day or usage. In a professional setting, this can be used, for example, to differentiate background music, speech, microphone announcements or content broadcast across several zones without multiplying the number of devices.

A Mixer Designed for Permanent Installations and Versatile Applications

This mixer is primarily aimed at professionals in light sound reinforcement, system integrators and operators of public venues. It is ideally suited to a bar managing a playlist, an announcement microphone and an external source, a restaurant wishing to broadcast a different atmosphere in each area, or a multipurpose venue alternating between speeches, welcome music and entertainment.

Thanks to its 4 mono inputs, it can accommodate individual sources requiring separate processing, particularly microphones or devices that need to remain clearly distinct in the mix. The 4 stereo inputs provide the flexibility needed to connect media players, computers, audio streamers or other stereo music sources. This combination also makes it well suited to corporate events, conference spaces, retail stores and small- to medium-sized mobile event installations.

It is not intended solely for expert users: its operating logic can also suit an on-site team looking for a reliable system that is quick to understand and easy to use on a daily basis. It is a good choice when you need a mixer capable of providing serious source management without the complexity of a larger mixing console.

Flexible and Efficient Audio Source Management

The main advantage of this model lies in its ability to bring several signal formats together within a single interface. The 4 mono channels make it possible to clearly separate priority sources, while the 4 stereo channels facilitate the integration of music content and external players. This organisation is particularly useful when quickly switching from background music to speech, or from a musical backdrop to more targeted distribution according to the different zones.

The 2+2-zone configuration is a real asset in an installation context. It allows for differentiated distribution according to the areas, with finer control over source assignment. In practice, this improves the user experience and makes the installation easier to understand: one zone can receive background music while another prioritises an announcement, a speech or a specific source.

This type of mixer therefore naturally fits into a modern sound reinforcement system where flexibility is essential. It can become the central hub of a small PA installation, a background music system or a compact audio distribution control room. Its purpose is clear: to provide structured, practical and professional audio control while remaining suited to real-world operational needs.

Technical specifications

Number of channels	8	Mic inputs	4 x euroblock
Bluetooth	No	Line inputs	stereo minijack, 4 x line-level RCA
Remote control	via optional PL-14 (Ethernet port)	Main outputs	6 x Euroblock
EQ	4 channels	Outputs (other)	RJ45, euroblock alarm, euroblock messaging, 2 x remote Euroblock
Motorised faders	No	Color	Black
Rackable	Included accessories	Display	LED
Rack unit	1	Weight	3.4 kg
Category	matrix mixer	Dimensions (mm)	438 x 242 x 48
Number of mic preamps	4